What is a Mitsubishi Lancer Evolution V airbag control unit?
The Mitsubishi Lancer Evolution V airbag control unit is the central unit of your passive safety system. It continuously monitors sensors to precisely deploy the airbags and seatbelt pretensioners in the event of a collision. Proper function is essential for occupant safety and is thoroughly checked during a Mitsubishi Lancer Evolution V airbag control unit repair.
This critical component processes signals from acceleration and crash sensors to assess the severity of the situation and control the ignition pulses. It is connected to all airbag modules and seatbelt pretensioners in the vehicle via special connectors, usually marked yellow.
The control unit has comprehensive diagnostic capabilities. It can store detailed error codes and activate the SRS warning light in the dashboard as soon as a problem is detected in the system.
Why is the Mitsubishi Lancer Evolution V airbag control unit defective?
The Mitsubishi Lancer Evolution V airbag control unit can be defective because it stores crash data after an accident, thus preventing it from being deployed again. Internal hardware errors, voltage spikes, or corrosion at the connectors can also lead to failure, necessitating a Mitsubishi Lancer Evolution V airbag control unit repair or replacement.
After airbags are deployed, the control unit is usually locked or damaged. This lock prevents accidental reactivation of the system and requires professional repair.
The control unit can fail even without an accident. This is often indicated by a permanently illuminated SRS warning light in the cockpit, even if no sensors or airbags are physically defective and require precise diagnosis.
Incorrect installation or improper handling, such as connecting the control unit without first disconnecting the vehicle battery, can also cause electronic failure of the control unit. A specialized workshop can determine the exact cause of the failure.
Common error codes for Mitsubishi Lancer Evolution V airbag control unit repair
When repairing a Mitsubishi Lancer Evolution V airbag control unit, specific error codes are crucial for a precise diagnosis. These codes indicate problems directly with the control unit or its core functions, such as communication errors, short circuits in the airbag circuits, or problems with the steering wheel clock spring, allowing for precise troubleshooting.
- B1000 : Control unit communication error → The communication between the airbag control unit and other vehicle systems is disrupted → This indicates internal control unit errors or problems on the data bus line.
- 22 : Clock Spring Error (Steering Wheel Winding) → A problem with the clock spring in the steering wheel has been detected → This is typically caused by a defective clock spring itself or its electrical connection to the control unit.
- 25 : Airbag connection error (often passenger airbag) → The airbag control unit does not correctly detect the electrical connection to an airbag module → Common causes are a loose connector, a broken cable or a defective airbag module.
- B1207 : Passenger airbag indicator short circuit → The indicator light for the passenger airbag has an electrical short circuit → This fault indicates a defect in the display unit or its wiring to the control unit.
- B1402 : Driver airbag squib ground or short circuit fault → The driver airbag deployment circuit is short-circuited or has a short to ground → This may be caused by a defective wiring, the clock spring or an internal control unit fault.
What part numbers are available for the Mitsubishi Lancer Evolution V airbag control unit repair?
Several specific OEM part numbers are relevant for Mitsubishi Lancer Evolution V airbag control unit repairs, ensuring compatibility and original quality. These numbers help identify the exact control unit and enable safe replacement or restoration of function, which is critical for vehicle safety.
The MR472773 is an officially documented Mitsubishi OEM number. It is confirmed as an airbag control unit for the Lancer V and is frequently found on the aftermarket for this series.
The 6835A168 is a Bosch OEM part number. It serves as the original SRS control module and is compatible with various Evolution series, including the Evo V, as Bosch is a key supplier.
The MR583376 is another Mitsubishi OEM number primarily known for Evo 7-9 models. However, due to overlapping systems, it can serve as a compatible alternative or replacement part for the Evo V.
MB953174 is a Mitsubishi/Autoliv OEM number. It is listed in reputable sources as an airbag control unit for Evo 5-6 models, making it a potential replacement or compatible part number.